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Optical Scanner

IP.com Disclosure Number: IPCOM000098032D
Original Publication Date: 1961-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Thorpe, AC: AUTHOR

Abstract

The optical device performs accurate, multiple scanning of marks 1 on document 2 during a single cycle of operation. Each row on the document has an associated wishbone shaped optical fiber 3. Fibers 3 are arranged in a line to correspond with a column on document 2. The upper extremities 4 of all fibers are arranged in a first set adjacent the periphery of rotatable drum 5. The other upper extremities 6 of all fibers are arranged in a second set near the periphery of drum 5.

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Optical Scanner

The optical device performs accurate, multiple scanning of marks 1 on document 2 during a single cycle of operation. Each row on the document has an associated wishbone shaped optical fiber 3. Fibers 3 are arranged in a line to correspond with a column on document 2. The upper extremities 4 of all fibers are arranged in a first set adjacent the periphery of rotatable drum 5. The other upper extremities 6 of all fibers are arranged in a second set near the periphery of drum 5.

Drum 5 has two aperture groups 7 and 8 that are regularly spaced about its periphery, and that are respectively associated with the fiber extremities 4 and 6. As an example, there are three apertures in each of the groups 7 and 8. All apertures in each group move in succession past their associated fiber extremities during a single revolution of drum 5 to provide multiple scanning of document 2.

Drum 5 is divided internally by opaque light shield 9. Light source 10 is positioned within drum 5 at one end and a photosensitive element 11 is positioned within 5 at the other end. Light from source 9 passes down each fiber in turn as a particular aperture 7 passes the upper extremities 4. The light directed down any fiber 3 is reflected back from document 2 and through an aperture 8 to photosensitive element 10. The presence or absence of a mark is determined by the degree of reflection.

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